Wet N Wild By Mazooma Some Buttons Dont Work PLEASE HELP!!!

[johnowhetton]

The fruit machine name is Wet N Wild and it is made by Mazooma, The stake is 25p per play and the jackpot is set on £15. The technology is scorpion 4.
Right the problem i have is on the top glass there are a total of 6 buttons which are take cash, take prize, change number, hi, lo and take feature. the only button that works is the take feature button, i have checked to make sure the wires are connected and not loose, someone has said to me that it could be a faulty scorpion 4 mpu. When i first got the machine everything worked fine but then the buttons stopped working, thats when i had a little fiddle about with the wires ensuring they were connected, i blew the plugs to remove any dust, when i switched the machine back on they worked so it led me to believe that it was probably some loose wires but later that day they stopped working and now it doesnt seem to matter what i do i just cant seem to get them to work now. I would be very greatful for any help and advice you can give to me